Public bug reported:

T:  Bus=02 Lev=02 Prnt=02 Port=04 Cnt=01 Dev#=  4 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0bda ProdID=8771 Rev=02.00
S:  Manufacturer=Realtek
S:  Product=Bluetooth Radio
S:  SerialNumber=00E04C239987
C:  #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=500mA
I:  If#=0x0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I:  If#=0x1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb

$ bluetoothctl 
Agent registered
[bluetooth]# power on
No default controller available

sudo systemctl status bluetooth.service
● bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor pre>
     Active: active (running) since Fri 2021-03-05 09:38:57 MSK; 39min ago
       Docs: man:bluetoothd(8)
   Main PID: 1184 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 19093)
     Memory: 3.5M
     CGroup: /system.slice/bluetooth.service
             └─1184 /usr/lib/bluetooth/bluetoothd

мар 05 09:38:58 ForHomePK bluetoothd[1184]: Bluetooth management interface 1.17>
мар 05 09:38:58 ForHomePK bluetoothd[1184]: setsockopt(L2CAP_OPTIONS): Invalid >
мар 05 09:38:58 ForHomePK bluetoothd[1184]: avrcp-controller: Protocol not supp>
мар 05 09:38:58 ForHomePK bluetoothd[1184]: setsockopt(L2CAP_OPTIONS): Invalid >
мар 05 09:38:58 ForHomePK bluetoothd[1184]: audio-avrcp-target: Protocol not su>
мар 05 09:39:01 ForHomePK bluetoothd[1184]: Loading LTKs timed out for hci0
мар 05 09:39:28 ForHomePK bluetoothd[1184]: Endpoint registered: sender=:1.73 p>
мар 05 09:39:28 ForHomePK bluetoothd[1184]: Endpoint registered: sender=:1.73 p>
мар 05 10:02:53 ForHomePK bluetoothd[1184]: Endpoint unregistered: sender=:1.73>
мар 05 10:02:53 ForHomePK bluetoothd[1184]: Endpoint unregistered: sender=:1.73

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-44-generic 5.8.0-44.50~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-44.50~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-44-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Mar  5 10:03:34 2021
InstallationDate: Installed on 2020-11-27 (97 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux-signed-hwe-5.8 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

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https://bugs.launchpad.net/bugs/1917850

Title:
  bluetooth 5 in ubuntu 20.04 no found

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